JP4356953B2 - Image processing system, image processing apparatus, control method therefor, and storage medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image processing system, an image processing apparatus, a control method therefor, and a storage medium, and more particularly to an image processing apparatus, method, and storage medium that digitally generate image data and output it to an output device such as a print.
[0002]
[Prior art]
Conventionally, such a system as shown in FIG. 7 is known.
[0003]
This is a general configuration of a system that uses a host computer 101 to create a page layout document such as DTP, a word processor, a graphic document, and the like, and outputs a hard copy by a laser beam printer, an inkjet printer, or the like.
[0004]
Reference numeral 102 denotes an application that runs on a host computer, and typical examples thereof include word processing software such as Microsoft Word (R) and page layout software such as Adobe PageMaker (R).
[0005]
A digital document created with these software is transferred to the printer driver 103 via an operating system (OS) of a computer (not shown).
[0006]
The digital document is usually represented as a set of command data representing graphics, characters, etc. constituting one page, and these commands are sent to the printer driver 103. The printer driver 103 converts a series of commands constituting the screen (page) into a language system called PDL (page description language). Typical examples of PDL are GDI (R) and PS (R) (postscript).
[0007]
The printer driver 103 transfers the generated PDL command data to the rasterizer 105 in the raster image processor 104. The rasterizer 105 develops characters, graphics and the like expressed by PDL commands into a two-dimensional bitmap image for actual printer output. Since a bitmap image is an image that fills a two-dimensional plane as a one-dimensional raster (line) repetition, 105 is called a rasterizer. The developed bitmap image is temporarily stored in the image memory 106.
[0008]
FIG. 8 schematically shows the above operation. The document image 111 displayed on the host computer is sent as a PDL command string 112 to the rasterizer via the printer driver, and the rasterizer develops a two-dimensional bitmap image on the image memory as shown at 113.
[0009]
The developed image data is sent to the color printer 107. The color printer 107 uses a known electrophotographic system or ink jet recording system image forming unit 108, which forms a visible image on paper and prints it out. Of course, the image data in the image memory is transferred in synchronization with a not-shown synchronization signal or clock signal necessary for operating the image forming unit, or a transfer request for a specific color component signal.
[0010]
[Problems to be solved by the invention]
In the conventional example described above, it is clear that various problems arise when the image forming unit used for output is considered.
[0011]
For example, normally, a color printer uses a four-color toner or ink of cyan (C), magenta (M), yellow (Y), and black (K) to form a color image on a print output. Image formation is performed based on the so-called subtractive color mixing principle.
[0012]
On the other hand, when a host computer application displays an image, it is common to use a color monitor. The color monitor uses three additive primary colors of red (R), green (G), and blue (B). Display the color.
[0013]
Therefore, the colors of characters and graphics constituting the document, or the color of the image that is laid out by reading a photograph or the like with a scanner are all expressed as a mixture of R, G, and B.
[0014]
That is, the rasterizer defines R, G, B as PDL and converts the color information transferred from the host computer into C, M, Y, K by some means, then generates a bitmap image and sends it to the printer There is a need to.
[0015]
However, the method of converting RGB to CMYK is not uniquely determined, and the optimum conversion method differs depending on the graphic attributes defined in PDL. For example, referring to the example of FIG. 8, a portion indicated by reference numeral 114 is a natural image read by a scanner or the like, a reference numeral 115 is an electronically generated graphic image such as a circle or a rectangle, and a reference numeral 116 is a character (TEXT) image. Each has different attributes.
[0016]
If the 116 TEXT colors are defined as black with R = G = B = 0, the optimal CMYK signal for this is expressed as an 8-bit density signal, C = M = Y = 0, and K = 255. In other words, it is preferable to reproduce black characters using only black toner out of the four colors of toner of the printer.
[0017]
On the other hand, if the pixel value of a specific pixel of the natural image 114 is R = G = B = 0, if converted to C = M = Y = 0 and K = 255 as in the case of the character data, Since the portion with the highest density in the natural image is to be expressed only with black toner, the absolute density is insufficient. Rather, in this case, it is preferable that the absolute density is increased by converting into values such as C = M = Y = 100 and K = 255.
[0018]
In order to solve such a problem, the rasterizer does not perform conversion to CMYK, but develops it into a bitmap image using RGB values, and in the RGB bitmap image sent on the image forming unit side. A character image area is detected using a well-known image area separation method, and a conversion method from RGB to CMYK is switched between the detected character image area and other areas to generate and output CMYK data. A method is conceivable.
[0019]
However, the image area separation method does not always detect 100% of the character area, and may erroneously detect the character area in the natural image area. Therefore, the formed image is also based on an erroneous detection result, which hinders improvement in the quality of the recorded image.
[0020]
As another example, there may be a case where the image forming unit can reproduce only binary dots. In this case, the rasterizer develops a multi-value bitmap image of Y, M, C, and K in the image memory. The image forming unit that receives the raster image is known binarization such as an error diffusion method or a dither process. The multi-valued image signal is converted into a binary image signal after processing, and then printed out.
[0021]
At this time, the optimum binarization method also changes depending on the attribute of the image. In other words, graphics such as characters and figures are preferably binarized by reducing the dither matrix size and emphasizing resolution. For natural images such as photographs, it is better to increase the matrix size and emphasize tone reproducibility. preferable.
[0022]
Also in this case, a method of adaptively switching the size of the dither matrix by performing image area separation processing on the multi-value bitmap image transferred from the image memory can be considered, but the same problem as described above is prevented. It is not possible.
[0023]
Therefore, when a PDL image is expanded into a bitmap, attribute information indicating whether the expanded image data is a natural image area, a character area, or a graphic area is generated at the same time, and two-dimensionally like the bitmap image. A method of developing a bitmap and transferring the developed image data to the image forming unit and transferring the attribute information at the same time, performing different image processing based on the attribute information, and outputting a hard copy. Conceivable.
[0024]
In this case, it is possible to apply different dither matrices or apply different color processing according to the image attributes as described above. However, if part images with different attributes are developed on the same coordinates, such as when characters are overwritten on a natural image or a photo is pasted on a graphic figure, the attribute settings for that part are inconsistent. May occur.
[0025]
For example, when an achromatic gray graphic figure is overwritten on a color natural image, the background natural image is set to look like a watermark inside the figure. Since the figure to be overwritten at this time is an achromatic color, it should normally be an area that should be reproduced with a single black color. Therefore, attribute information indicating a monochrome object is added to this graphic area. . However, since the background color image is set to be overlaid in such a way that it can be seen through, if it is reproduced in black only, the color information of the natural image that should originally be seen through the background will be lost. become.
[0026]
The present invention has been made in view of such a problem, and an image processing system that makes it possible to print out a mixed image having different attributes represented by print information described in a command format with higher image quality. An image processing apparatus, a control method thereof, and a storage medium are provided.
[0027]
[Means for Solving the Problems]
In order to solve this problem, for example, an image processing system of the present invention has the following configuration. That is,
Data input means for inputting image data expressed by a command group associated with individual components constituting the image;
Command interpreting means for generating a bitmap image based on the command and storing the bitmap image in a predetermined bitmap memory;
Of the part represented by the command Indicates an attribute Based on the attribute information, the bitmap image Each pixel unit includes information indicating whether or not it has at least a vector attribute, information indicating whether or not it has a character attribute, and information indicating whether or not it has a chromatic color attribute Attribute map information generating means for generating attribute map information and storing it in a predetermined attribute memory;
An image processing system having an image forming means for outputting a hard copy based on the generated bitmap image and attribute map information,
When the attribute map information generating unit stores the attribute map information of the part of interest in the attribute memory, the attribute map information of the part of interest and the attribute map information of other parts previously stored are stored. In comparison, if the attribute map information is different, whether the attribute map information of the component of interest has the character attribute, which does not have the vector attribute, with respect to the information indicating whether the vector attribute is present The information indicating whether or not it has a character attribute, and the information indicating whether or not it has a chromatic color attribute has a chromatic color. It is characterized by updating.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.
[0029]
FIG. 1 is a system block diagram of an embodiment of the present invention. In the figure, 10 to 15 are the same as 101 to 106 in FIG. 7, and 18 and 19 are the same as 107 and 108 in FIG.
[0030]
The feature of this embodiment resides in the attribute map memory 16 and the image processing unit 17. Here, the image processing unit 17 is shown to exist independently, but the image processing unit 17 may be included in the raster image processor 13 or the color printer 18. The rasterizer 14 may be a single device or may be included in the host computer 10 or the color printer 18.
[0031]
The rasterizer 14 generates a bitmap image on the image memory 15 based on a command associated with each part (hereinafter referred to as an object) constituting the image. At this time, the attribute map information is based on the attribute of the part. Is written into the attribute map memory 16.
[0032]
Note that the rasterizer 14 in the embodiment will be described on the assumption that when generating a bitmap image in the image memory 15, an R-, G-, and B-bit 8-bit bitmap image is created for each pixel (thus, the image memory 15 Is initialized with data FFh representing “white” every time image recording of one page is completed).
[0033]
FIG. 6 shows an example of the relationship between component attributes and attribute map information in the embodiment.
[0034]
Here, the attribute map information is 3-bit flag information, and the attribute map information is generated as shown in the figure according to six component attributes. There are three types of attribute map information: vector attribute, character attribute, and color attribute. The vector attribute is “0” when the target part (object) is a natural image, and “1” when the object is a graphic object such as a character or graphic. Become. The character attribute is “0” for a natural image or graphic object, and “1” for a character object. The color attribute is determined depending on whether the object is color (chromatic color) or black and white (achromatic color), and “0” is set for a color object and “1” is set for a black and white object for any natural image, character, or graphic object. Is set. These attributes are definitions for one object. For example, a color attribute of “0” indicates that the entire object is chromatic, and the pixel is chromatic. It does not indicate that there is.
[0035]
Returning to FIG. 1, the image processing unit 17 performs various image processing on the bitmap data in the image memory 15 and outputs the data to the color printer. At this time, the image processing unit 17 stores the data in the attribute map memory 16 according to the rules of FIG. The image processing method is appropriately switched with reference to the attribute map information (details will be described later).
[0036]
The image forming unit 19 in the embodiment employs a color laser beam printer engine (however, the present invention is not limited to this, and an ink jet printer may be used). Briefly explaining the operation, a recording paper is wound around a transfer drum (not shown), and the toner image of one color component generated on the photosensitive drum (not shown) is transferred sequentially for all four color components. When the transfer of the last color component (Bk component) is completed, it is fixed by a fixing device and discharged to the outside.
[0037]
Next, a method for generating attribute map information will be described in more detail.
[0038]
First, before starting the development of PDL data, the contents of the attribute map memory 16 are initialized with all attributes set to 1. This is to perform processing of attribute information when a plurality of objects are overwritten and developed, which will be described later, without contradiction.
[0039]
Next, the document image described in PDL is expanded. Assume that the document is as shown in FIG. This document is composed of a plurality of objects having different attributes. FIG. 3 shows this document divided for each attribute.
[0040]
FIG. 3A shows a color natural image object, and FIG. 3B shows only a black and white natural image object. Similarly, FIG. 7C shows a color character object, FIG. 10D shows a black and white character object, FIG. 10E shows a color graphic object, and FIG. 10F shows a black and white graphic object. When all these are superimposed, FIG. 2 is obtained.
[0041]
The area occupied by each object in FIGS. 6A to 6F corresponds to each attribute in the left column of FIG. 6, and attribute map information is generated on the coordinates where each object exists according to the rules of FIG. Are written in the attribute map memory 16.
[0042]
For example, the values of vector attribute = 0, character attribute = 0, and color attribute = 0 are written as attribute map information in a rectangular area where the image of FIG.
[0043]
In the black and white natural image area of FIG. 5B, color attribute = 1 is generated in the rectangular area where the image exists (other vector attributes and character attributes are also 0).
[0044]
Similarly, vector attribute = 1, character attribute = 1, color attribute = 0 in the attribute map memory corresponding to the area where the image is expanded in FIG. 4C, vector attribute = 1, character in FIG. Attribute = 1 and color attribute = 1 are generated.
[0045]
Similarly, in FIG. 8E, vector attribute = 1, character attribute = 0, and color attribute = 0 are generated, and in FIG. 8F, vector attribute = 1, character attribute = 0, and color attribute = 1 are generated. .
[0046]
Here, as clearly shown in FIG. 3, there are cases where objects having different attributes are expanded at the same position on the bitmap memory. For example, the lower right triangle graphic in FIG. 3F is overwritten on the lower right natural image portion in FIG.
[0047]
In such a case, since the last expanded object normally overwrites the bitmap image, the attribute map information is similarly overwritten with the attribute information of the last expanded object. That is, in the case of FIG. 2, the attribute information of the triangular graphic object is stored in the final attribute map memory.
[0048]
However, when different objects are expanded on the same coordinate, if the image data that has already been expanded is to be left, for example, a logical operation such as AND or OR is performed on the image in the area where the natural image already exists. In some cases, the graphic object is overwritten while being applied. In the case of GDI (R) described above, what is called ROP processing (Raster Operation processing) corresponds to such processing.
[0049]
In this case, if the attribute information of the object to be overwritten is overwritten, for example, when a monochrome character is overwritten on a color natural image, the color attribute of the overwritten portion becomes “1” (ie, monochrome). As a result, the existing color image information is lost.
[0050]
Therefore, in this embodiment, attribute map information is generated as follows.
[0051]
First, when a new object is expanded, the attribute map memory corresponding to the bitmap coordinates to be expanded is referred to, and already generated attribute information is referred to. Then, compare the currently developed attribute information with the attribute information in the attribute map memory that has already been generated in bit units, and if they match, store them as they are, and if they do not match, store the bits. Reset to “0”. Since the attribute map information is initialized to “1” in the initial state, when a new object is developed on an area where the object has not yet been developed (background area), the attribute information of the object to be developed If the corresponding bit is “1”, the attribute information of that bit is “1”; otherwise, it is reset to “0”.
[0052]
Although the comparison of attribute information is performed on a bit basis, it may be determined whether or not all three pieces of attribute information match.
[0053]
In the former case, if the image that has already been developed is a black and white graphic, and the object to be overwritten and developed is a color character, the vector attribute is both 1, so it remains at 1. The attribute is reset to 0 because the former is 0 and the latter is 1, and the color attribute is also reset to 0 because the former is 1 and the latter is 0.
[0054]
Accordingly, the attribute information generated at this pixel position in this case is vector attribute = 1 and character attribute = color attribute = 0, which is equivalent to the treatment of color graphics.
[0055]
The attribute information shown in FIG. 4 is generated by the above procedure. FIGS. 4A, 4B, and 4C are vector attributes, character attributes, and color attributes, respectively. The part in which the attribute is set to “1” is shown.
[0056]
Since all the initial states are 1, in the case of the vector attribute of FIG. 9A, only the object having the vector attribute of “0”, that is, only the area where the natural image is developed is 0, otherwise “1”. Yes.
[0057]
Similarly, the character attribute of FIG. 5B is “0” in the area where the non-character object is developed. In FIG. 5C, when a color object is developed, the attribute information of the area is reset to “0”.
[0058]
The attribute map information is generated by the above procedure.
[0059]
The generated bitmap image data developed in the image memory 15 and the attribute map data stored in the attribute map memory 16 are transferred to the image processing unit 17 together with a synchronization signal (not shown).
[0060]
At this time, the data of the predetermined pixel position in the image memory 15 and the attribute map data of the corresponding pixel are transferred in association with each other. That is, when the pixel value of the specific pixel in the image memory is sent to the image processing unit, attribute map data (flag data) at the same pixel position is also sent almost simultaneously.
[0061]
The image processing unit 17 performs various image processing on the pixel values (data of each color component) from the image memory 15. The processing method is determined by attribute information (flag data) from the attribute map memory 16. And controlled.
[0062]
That is, with respect to the image data (RGB 24-bit data) developed in the image memory 15, first, data of one color component formed in the image forming unit at that time is extracted by log conversion processing and UCR processing. Since it is known to convert RGB luminance data to YMCK density data, the details are omitted, but the extracted data of one recording color component is subjected to a dither matrix size switching process according to attribute map information. And converted into a binary signal. Then, the binary signal is output to the image forming unit 19.
[0063]
FIG. 5 is an example of a dither matrix for switching. The three patterns (a), (b), and (c) are switched according to the attribute map information. The image data used in the present embodiment is an 8-bit integer value (0 to 255) for each pixel, and the value in each cell of the dither matrix is binarized as a threshold value to turn ON / OFF the output pixel. Controls OFF. FIG. 5A shows a dither matrix having a size of 3 × 3. If one pixel is 600 dpi, 10 gradations can be expressed with a resolution of 200 dpi. FIG. 5B shows a 5 × 5 size and can express 120 dpi / 26 gradations. Since FIG. 8C is an 8 × 8 size, the gradation is 75 dpi / 65.
[0064]
Therefore, the attribute map information corresponding to the target pixel is referred to, and when the continuous tone area, that is, the vector attribute is 0, binarization is performed with the matrix of FIG. When the character attribute is “0”, binarization is performed using the matrix shown in FIG. When the character area, that is, the vector attribute is “1” and the character attribute is “1”, the matrix shown in FIG. In this way, for example, it is possible to obtain a high-quality output image such that a character or the like is reproduced with high resolution while a photograph is reproduced with an emphasis on gradation, and a graphic is reproduced between them.
[0065]
As described above, according to the present embodiment, a one-page bitmap image of an object to be recorded, which is described in PDL, is developed, and the attributes (characters, line drawings, photographic images, etc.) of each object are displayed. The attribute information is created in association with the bitmap image for each pixel according to the image), and even if there are different attributes at the same position, the attribute information is appropriately corrected to an attribute suitable for different overlapping attributes. High-quality images can be recorded.
[0066]
<Description of Second Embodiment>
In the above embodiment (the first embodiment), the image processing unit 17 reads the attribute map data from the attribute map memory 16 in synchronization with the pixel data (RGB data) from the image memory 15 in the dither matrix size. The dither matrix size is switched according to the attribute map data.
[0067]
However, the UCR process used when converting from RGB to YMCK may be controlled according to the attribute map data.
[0068]
For example, if all of the vector attribute, character attribute, and color attribute in the attribute map data are “0”, that is, if the pixel indicates a part of a pixel such as a color photographic image, the 100% UCR process is not performed. By performing the 80% UCR process, the recording is corrected in a direction in which recording with all the recording color components can be performed.
[0069]
If the pixel of interest does not have a color attribute, image recording is performed using only the Bk component. For example, even if it is a part of a photographic image or the like, if the image area has no color attribute, only the Bk component is output, and other components (C, M, Y) are forcibly output 0. To do.
[0070]
Also, if the target pixel is part of a character or vector component and has a color attribute based on the attribute map data, 100% UCR processing is performed.
[0071]
As described above, according to the second embodiment, the same operational effects as those of the first embodiment can be obtained.
[0072]
Note that the first and second embodiments may be suitably combined.
[0073]
<Description of Third Embodiment>
In the first and second embodiments, the attribute map information has been described with respect to three types of attributes: whether it is a vector image, whether it is a character, whether it is color or black and white, but of course it is not limited to this. For example, in the case of a color object, various flag information such as a flag for identifying the hue and saturation of the color or whether the edge portion of the object is used can be considered.
[0074]
Further, the switching of the image processing method based on the attribute map information is not limited to the above-described embodiment, and other switching of the edge emphasis processing or the compression method when the bitmap data is compressed and transferred to the printer unit. Various things are conceivable.
[0075]
As a rule for generating new attribute information from the attribute information of two objects, in this embodiment, the attribute information of the two objects is set to the same value, and if not, the value is reset to 0. Although shown, this is equivalent to performing logical product (AND) processing on the attribute information of both. However, the present invention is not limited to this. For example, the attribute 1 is given priority by taking the logical sum (OR) of two attributes, or the attribute information of the overwritten part is always used. A method is also conceivable in which the attribute information of the part being stored is stored as it is.
[0076]
Furthermore, in the embodiment, the image memory 15 has been described as developing a bitmap image of RGB luminance components, but it is needless to say that bitmap image data of YMC or YMCK density components may be expanded. .
[0077]
In the embodiment, the color LBP is described as an example of the image forming unit. However, the image forming unit may be adapted to an image forming unit capable of multi-value image recording by adopting a PWM method. In this case, since conversion to one bit per pixel (binarization processing) is not necessary, it may be applied to RGB → YMCK conversion processing or edge conversion processing of density-converted image data according to the attribute map information. I will.
[0078]
Further, the recording method is not limited to the laser beam printer, but may be an engine that ejects ink droplets or any other method. In short, it is only necessary to switch to the optimum recording process as appropriate according to the attribute information stored in the attribute map memory 16.
[0079]
Furthermore, although the raster image processor 13 has been described as being interposed between the host computer 10 and the color printer 18 in the embodiment, the raster image processor 13 may be provided in the housing of the color printer, or the host computer 10 It may be provided as part of the processing on the side.
[0080]
In the latter case, since it is possible to incorporate in particular as part of the functions of the printer driver 12, a storage medium storing software program codes for realizing the functions of the above-described embodiments is supplied to the system or apparatus. However, this can also be achieved by the computer (or CPU or MPU) of the system or apparatus reading and executing the program code stored in the storage medium.
[0081]
In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention.
[0082]
As a storage medium for supplying the program code, for example, a floppy disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile raw memory card, a ROM, or the like can be used.
[0083]
Further, by executing the program read by the computer, not only the functions of the above-described embodiments are realized, but also an OS (operating system) running on the computer is actually executed based on an instruction of the program code. It goes without saying that the case where the functions of the above-described embodiment are realized by performing a part or all of the processing and the processing is included.
[0084]
Further, after the program code read from the storage medium is written to a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.
[0085]
【The invention's effect】
As described above, according to the present invention, a mixed image having different attributes represented by print information described in a command format can be printed out with higher image quality.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a block configuration for implementing the present invention.
FIG. 2 is a diagram illustrating an example of a PDL document to which the present invention is applied.
FIG. 3 is a diagram in which parts in the document of FIG. 2 are disassembled and displayed for each attribute.
FIG. 4 is a diagram illustrating a case where attribute map information is generated from the document of FIG.
FIG. 5 is a diagram illustrating an example of a dither matrix in the present invention.
FIG. 6 is a diagram illustrating a relationship between image attributes and attribute map information in the embodiment.
FIG. 7 is a diagram illustrating an example of a conventional block configuration.
FIG. 8 is a diagram illustrating an image output procedure by PDL.

Claims (7)

Data input means for inputting image data expressed by a command group associated with individual components constituting the image;
Command interpreting means for generating a bitmap image based on the command and storing the bitmap image in a predetermined bitmap memory;
Based on attribute information indicating the attribute of the component expressed by the command, information indicating whether or not each pixel unit of the bitmap image has at least a vector attribute, information indicating whether or not it has a character attribute, and Attribute map information generating means for generating attribute map information including information indicating whether or not the chromatic color attribute is present, and storing the attribute map information in a predetermined attribute memory;
An image processing system having an image forming means for outputting a hard copy based on the generated bitmap image and attribute map information,
The attribute map information generating means compares the attribute map information of the part of interest with the attribute map information of other parts previously stored when storing the attribute map information of the part of interest in the attribute memory . When the attribute map information is different, the attribute map information of the component of interest has character information about information indicating whether or not the character attribute is not included in the information indicating whether or not the vector attribute is included. An image processing system, wherein information indicating whether or not a chromatic color attribute has no attribute is updated so as to have a chromatic color . Whether the attribute map information has, as an initial state, a chromatic color attribute having a vector attribute for information indicating whether or not the vector attribute is included, a character attribute regarding information indicating whether or not the character attribute is included not have chromatic information indicating as to whether or not, the image processing system of claim 1 wherein, characterized in that it is set as. Further, the image processing means reads out pixel by pixel from the bitmap memory and the attribute memory, and performs processing by switching the color conversion processing for the pixel of interest based on the read attribute map information. 3. The image processing system according to claim 1, wherein the processed data is output to the image forming unit. An image processing apparatus for recording a color image based on print data composed of command format data,
Command interpreting means for generating bitmap image data of a part based on a command in the print data, and developing it in a predetermined image memory;
Based on attribute information indicating the attribute of the component expressed by the command, information indicating whether or not each pixel unit of the bitmap image has at least a vector attribute, information indicating whether or not it has a character attribute, and Attribute map information generating means for generating attribute map information including information indicating whether or not the chromatic color attribute is present, and storing the attribute map information in a predetermined attribute memory;
Means for outputting to an image forming means for recording a color image based on the generated bitmap image and attribute map information;
The attribute map information generating means compares the attribute map information of the part of interest with the attribute map information of other parts previously stored when storing the attribute map information of the part of interest in the attribute memory . When the attribute map information is different, the attribute map information of the component of interest has character information about information indicating whether or not the character attribute is not included in the information indicating whether or not the vector attribute is included. An image processing apparatus, wherein information indicating whether or not a chromatic color attribute has no attribute is updated to have a chromatic color . A control method of an image processing apparatus for recording a color image based on print data composed of command format data,
A command interpretation step of generating bitmap image data of a part based on a command in the print data and developing it in a predetermined image memory;
Based on attribute information indicating the attribute of the component expressed by the command, information indicating whether or not each pixel unit of the bitmap image has at least a vector attribute, information indicating whether or not it has a character attribute, and Generating attribute map information including information indicating whether or not a chromatic color attribute is included , and storing the attribute map information in a predetermined attribute memory; and
And outputting to the image forming means for recording a color image based on the generated bitmap image and attribute map information,
The attribute map information generation step compares the attribute map information of the target part with the attribute map information of other parts previously stored when storing the attribute map information of the target part in the attribute memory . When the attribute map information is different, the attribute map information of the component of interest has character information about information indicating whether or not the character attribute is not included in the information indicating whether or not the vector attribute is included. A control method for an image processing apparatus, wherein information indicating whether a chromatic color attribute is not included or not is updated so as to have a chromatic color . A recording medium storing a program code for causing a computer to function as an image processing apparatus that records a color image based on print data composed of command format data when read and executed by the computer ,
Command interpreting means for generating bitmap image data of a part based on a command in the print data, and developing it in a predetermined image memory;
Based on attribute information indicating the attribute of the component expressed by the command, information indicating whether or not each pixel unit of the bitmap image has at least a vector attribute, information indicating whether or not it has a character attribute, and Attribute map information generating means for generating attribute map information including information indicating whether or not the chromatic color attribute is present, and storing the attribute map information in a predetermined attribute memory;
Storing a program code to function as a means for outputting to an image forming means for recording a color image based on the generated bitmap image and attribute map information;
The attribute map information generating means compares the attribute map information of the part of interest with the attribute map information of other parts previously stored when storing the attribute map information of the part of interest in the attribute memory . When the attribute map information is different, the attribute map information of the component of interest has character information about information indicating whether or not the character attribute is not included in the information indicating whether or not the vector attribute is included. What is claimed is: 1. A recording medium that is updated so as to have a chromatic color for information indicating whether or not it has a chromatic color attribute . An image processing system including an information processing device, an image processing device, and a color image recording device,
The information processing apparatus includes:
Print target information requested from the application program is provided with output means for converting the print target information into print data in a command format and outputting it to the image processing apparatus,
The image processing apparatus includes:
Command interpreting means for interpreting a command output by the output means, generating bitmap image data of a part represented by the command, and developing the bitmap image data in a predetermined image memory;
Based on attribute information indicating the attribute of the component expressed by the command, information indicating whether or not each pixel unit of the bitmap image has at least a vector attribute, information indicating whether or not it has a character attribute, and Attribute map information generating means for generating attribute map information including information indicating whether or not the chromatic color attribute is present, and storing the attribute map information in a predetermined attribute memory;
Means for reading information from the image memory and the attribute memory, and correcting bitmap image data from the image memory based on the attribute map information;
The color image processing apparatus includes:
Means for recording a color image on a recording medium based on the corrected bitmap image data;
The attribute map information generating means compares the attribute map information of the part of interest with the attribute map information of other parts previously stored when storing the attribute map information of the part of interest in the attribute memory . When the attribute map information is different, the attribute map information of the component of interest has character information about information indicating whether or not the character attribute is not included in the information indicating whether or not the vector attribute is included. An image processing system, wherein information indicating whether or not a chromatic color attribute has no attribute is updated so as to have a chromatic color .

Images